Before Irish names were translated into English, O'Kallaghan had a Gaelic form of O Ceallachain, possibly from "ceallach", which means "strife". The family is descended from Ceallachan (Callaghan), the 10th century King of Munster
from whom their surname is derived, and as such, the name O'Kallaghan is a patronymic
Early Origins of the O'Kallaghan family
The surname O'Kallaghan was first found in Munster
. The earliest mention of the name O'Kallaghan placed them in the barony of Kinlea, in County Cork
, yet the family lost most of their original lands in the barony of Kinelea during the Anglo- Norman Conquest
. They relocated to an area near Mallow, in the north of the county, and remained there until forced off their lands once again during the Cromwellian Invasion
of the 17th century. The head family migrated to the east of County Clare
and flourished, giving their name to the village of Callaghan's Mills. The resumption of the often-discarded prefix "O" has been widespread during the late twentieth century, but in the early twentieth century, Callaghans greatly outnumbered O'Callaghans, but such is no longer the case. The O'Callaghans are one of the few Irish families
to still have a chief, certified by the Genealogical Office. CITATION[CLOSE]
MacLysaght, Edward, Irish Families Their Names, Arms and Origins 4th Edition. Dublin: Irish Academic, 1982. Print. (ISBN 0-7165-2364-7)
Early History of the O'Kallaghan family
This web page shows only a small excerpt of our O'Kallaghan research.Another 403 words (29 lines of text) covering the years 1172, 1640, 1738, 1807, 1797, 1883, 1605, 1654, 1839 and 1909 are included under the topic Early O'Kallaghan History in all our PDF Extended History products and printed products wherever possible.
O'Kallaghan Spelling Variations
The scribes who created documents long before either the Gaelic or English language resembled their standardized versions of today recorded words as they sounded. Consequently, in the Middle Ages the names of many people were recorded under different spellings each time they were written down. Research on the O'Kallaghan family name revealed numerous spelling variations
, including Callaghan, Callahan, O'Callaghan, O'Callahan, Calahan, Cellaghan, Kalahan, Kallaghan, Kallahan, O'Kallaghan, Kellaghan, Kelleghan, Kellahan, Kelahan, Ceilahan, Ceilaghan, Callachan, Calachan, Callagan, Calagan, Kelagan, Callighan and many more.
Early Notables of the O'Kallaghan family (pre 1700)
Another 35 words (2 lines of text) are included under the topic Early O'Kallaghan Notables in all our PDF Extended History products and printed products wherever possible.
Migration of the O'Kallaghan family to the New World and Oceana
Many Irish families
boarded ships bound for North America in the middle of 19th century to escape the conditions of poverty and racial discrimination . Although these immigrants often arrived in a destitute state, they went on to make important contributions to the emerging nations of the United States and Canada. An inquiry into many immigration and passenger lists has revealed many early immigrants to North America bearing the O'Kallaghan family name: James Callaghan who settled in America in 1768; Gerhard Callaghan settled in 1764; James Callaghan settled in Pennsylvania in 1772; John Callaghan settled in Boston Massachusetts in 1764.